Avaliação simplificada e comportamental do processamento auditivo em escolares: estabelecendo relações

Objetivo caracterizar o processamento auditivo de escolares que falharam na avaliação simplificada do processamento auditivo e comparar esses achados com os resultados na avaliação comportamental do processamento auditivo. Métodos realizou-se a avaliação audiológica básica (audiometria tonal e vocal e medidas de imitância acústica), bateria comportamental do processamento auditivo composta pelos testes PSI (Pediatric Speech Intelligibility) versão em português, PPS (Pitch Pattern Sequence), MLD (Masking Level Difference), SSW (Stagged Spondaic Words) versão em português e GIN (Gap in Noise) e reteste da avaliação simplificada do processamento auditivo com escolares de 9 a 14 anos, matriculados entre o 4º ano e a 8ª série do ensino fundamental de uma escola de ensino público de Porto Alegre. Resultados dos 11 escolares avaliados que falharam na avaliação simplificada, 10 (90,9%) apresentaram alterações na bateria comportamental do processamento auditivo. Os subperfis com maior número de alterações foram os de decodificação e integração, as habilidades auditivas mais prejudicadas foram de interação binaural e separação e integração binaural concomitantemente. Não houve associação significante entre as tarefas da avaliação simplificada e os testes da bateria comportamental ao comparar o mesmo correlato neurofisiológico ou tarefa semelhante. Conclusão foi possível caracterizar o processamento auditivo dos escolares avaliados. A partir da comparação entre a avaliação simplificada e a bateria comportamental verificou-se que a avaliação simplificada pode ser um preditor sensível às alterações de processamento auditivo, apesar de não se identificar associação específica entre as habilidades comparadas.

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Treinamento auditivo nas alterações do processamento auditivo: estudo de caso

Revista CEFAC ◽

10.1590/1982-021620157914 ◽

2015 ◽

Vol 17 (2) ◽

pp. 604-614 ◽

Cited By ~ 1

Author(s):

Susan Stroiek ◽

Lenita da Silva Quevedo ◽

Carla Hernandez Kieling ◽

Ana Carolina Lago Battezini

Keyword(s):

Speech Intelligibility ◽

Gap Detection ◽

Level Difference ◽

Pitch Pattern ◽

Pattern Sequence ◽

Masking Level Difference

O objetivo deste estudo é verificar a eficácia de um programa de Treinamento Auditivo comparando o desempenho inicial, nos testes de avaliação do processamento auditivo, com o desempenho após o treinamento auditivo. Para este estudo de caso, desenvolvido na clínica de Fonoaudiologia da Universidade de Passo Fundo, foi selecionado um indivíduo que apresentava alterações de linguagem, queixas compatíveis com alterações de processamento auditivo, avaliação audiológica básica normal e avaliação do processamento auditivo alterada. Para isso, foram utilizados os testes Pediatric Speech Intelligibility, Staggered Spondaic Word, Dicótico de Dígitos, Random Gap Detection Test, Masking Level Difference e Pitch Pattern Sequence. Os resultados obtidos na reavaliação com os testes de Processamento Auditivo após oito sessões de treinamento auditivo apontaram melhoras na decodificação e codificação que se encontravam alteradas, persistindo um leve prejuízo na organização. A evolução do indivíduo de grau severo para leve comprova a eficácia do Treinamento Auditivo.

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The effect of diotic and dichotic level-randomization on the binaural masking-level difference

The Journal of the Acoustical Society of America ◽

10.1121/1.2047167 ◽

2005 ◽

Vol 118 (5) ◽

pp. 3229-3240 ◽

Cited By ~ 3

Author(s):

G. Bruce Henning ◽

Virginia M. Richards ◽

Jennifer J. Lentz

Keyword(s):

Level Difference ◽

Masking Level Difference

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Effect of duration and gating of the signal on the binaural masking level difference for narrowband and broadband maskers

The Journal of the Acoustical Society of America ◽

10.1121/1.5000796 ◽

2017 ◽

Vol 142 (3) ◽

pp. EL258-EL263 ◽

Cited By ~ 1

Author(s):

Jesko L. Verhey ◽

Ifat Yasin

Keyword(s):

Level Difference ◽

Masking Level Difference

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Masking Level Difference and Electrophysiological Evaluation in Adults with Normal Hearing

International Archives of Otorhinolaryngology ◽

10.1055/s-0040-1701266 ◽

2020 ◽

Vol 24 (04) ◽

pp. e399-e406

Author(s):

Joyce Miranda Santiago ◽

Cyntia Barbosa Laureano Luiz ◽

Michele Garcia ◽

Daniela Gil

Keyword(s):

Auditory Processing ◽

Auditory Evoked Potentials ◽

Normal Hearing ◽

Central Auditory Processing ◽

Positive Correlation ◽

Binaural Interaction ◽

Level Difference ◽

Significant Difference ◽

Masking Level Difference ◽

The Mean

Abstract Introduction The auditory structures of the brainstem are involved in binaural interaction, which contributes to sound location and auditory figure-background perception. Objective To investigate the performance of young adults in the masking level difference (MLD) test, brainstem auditory-evoked potentials (BAEPs) with click stimulus, and frequency-following response (FFR), as well as to verify the correlation between the findings, considering the topographic origin of the components of these procedures. Methods A total of 20 female subjects between 18 and 30 years of age, with normal hearing and no complaints concerning central auditory processing underwent a basic audiological evaluation, as well as the MLD test, BAEP and FFR. Results The mean result on the MLD test was of 10.70 dB. There was a statistically significant difference in the absolute latencies of waves I, III and V in the BAEPs of the ears. A change in the FFR characterized by the absence of the C, E and F waves was noticed. There was a statistically significant difference in the positive correlation of wave V in the BAEPs with the MLD. There was a statistically significant difference in the positive correlation of the mean MLD and the V, A and F components of the FFR. Conclusion The mean MLD was adequate. In the BAEPs, we observed that the click stimulus transmission occurred faster in the right ear. The FFR showed absence of some components. The mean MLD correlated positively with the BAEPs and FFR.

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Modeling Binaural Unmasking of Speech Using a Blind Binaural Processing Stage

Trends in Hearing ◽

10.1177/2331216520975630 ◽

2020 ◽

Vol 24 ◽

pp. 233121652097563

Author(s):

Christopher F. Hauth ◽

Simon C. Berning ◽

Birger Kollmeier ◽

Thomas Brand

Keyword(s):

Speech Recognition ◽

Speech Intelligibility ◽

Single Channel ◽

Signal To Noise Ratio ◽

Binaural Processing ◽

Speech In Noise ◽

Masking Level Difference ◽

Low Pass ◽

Speech Intelligibility Index ◽

Filtered Speech

The equalization cancellation model is often used to predict the binaural masking level difference. Previously its application to speech in noise has required separate knowledge about the speech and noise signals to maximize the signal-to-noise ratio (SNR). Here, a novel, blind equalization cancellation model is introduced that can use the mixed signals. This approach does not require any assumptions about particular sound source directions. It uses different strategies for positive and negative SNRs, with the switching between the two steered by a blind decision stage utilizing modulation cues. The output of the model is a single-channel signal with enhanced SNR, which we analyzed using the speech intelligibility index to compare speech intelligibility predictions. In a first experiment, the model was tested on experimental data obtained in a scenario with spatially separated target and masker signals. Predicted speech recognition thresholds were in good agreement with measured speech recognition thresholds with a root mean square error less than 1 dB. A second experiment investigated signals at positive SNRs, which was achieved using time compressed and low-pass filtered speech. The results demonstrated that binaural unmasking of speech occurs at positive SNRs and that the modulation-based switching strategy can predict the experimental results.

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